I need windows for school but they are very expensive. I have the a 13" macbook bought in dec 2008. I see people say to stay away from VISTA so I decided to get XP, its cheaper right? All I see on Ebay are these "FOR DISTRIBUTION WITH A NEW PC" Disks. Will this work fine as long as they are service pack and I use boot camp? Anyone installed these? Or should I dare for VISTA? I found a cheaper VISTA full version but its "DVD version" (does that make a difference?) All I really need is for ONE program which is some review software and I need to save money. And I need it to work with my bluetooth apple wireless keyboard and mouse. Any feedback would be greatly appreciated. Thanks.